Fuel quality inadequate seat leon 2012 mk2

Jul 28, 2025
2
0
Hi, i have a Seat leon 1.2 tsi 2012 mk2 and i noticed sluggishness and revs at 1k idle. I got a tech to plug in VCDS and a 20045 fault code appeared that said fuel quality inadequate. I filled up with shell vpower and the car was as good as new instantly. But after 2 days its happened again. 1k revs and sluggishness. Ive been told to fill up with vpower again. But I just want to know if anyone knows about this issue and how to fix as its annoying me when driving up steep hills or need for more power.
 

R3k1355

Active Member
Oct 30, 2014
1,875
279
Yorkshire
Sounds like more than a fuel quality issue, unless you've been trying to run it on 85 Octane garbage or something?

You probably need some more thorough investigation.
 
Jul 28, 2025
2
0
Sounds like more than a fuel quality issue, unless you've been trying to run it on 85 Octane garbage or something?

You probably need some more thorough investigation.
Yeah ive been using a petrol station close to work and they were unbranded. But ive used that quite a couple times and its just happened now
 
SEATCUPRA.NET Forum merchandise